Microbiology The lesion is painful and bleeds easily while taking the swab for gram staining. What will be the probable cause of infection? A Haemophilus ducreyi B Triponema pallidum C HPV D HSV 2 💡 Explanation The lesion is painful and bleeds easily while taking the swab for gram staining. What will be the probable cause of infection? ✓ Correct Answer: A. Haemophilus ducreyi